The camera button just sits there useless until the camera is used. How about letting us map that to a function? Personally, I would like to be able to use it as a Pause/Play toggle. When I am out and about listening to music, I very often need to pause. Currently, this requires pulling out the phone, pressing the power button, swiping it open, and (if the music screen is up) pressing pause. That is WAY too long, and a simple hardware button would be perfect.